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Finding the Fourth Proportional to 34,782.80, 52,135.80 and 19,211.60

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Solution

The fourth proportional to 34,782.80, 52,135.80 and 19,211.60 is: 28,796.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,782.80 : 52,135.80 = 19,211.60 : x
  2. Step 2: Convert to fraction form
    34,782.80/52,135.80 = 19,211.60/x
  3. Step 3: Cross multiply
    34,782.80x = 52,135.80 × 19,211.60
  4. Step 4: Simplify right side
    34,782.80x = 1,001,612,135.28
  5. Step 5: Solve for x
    x = 1,001,612,135.28/34,782.80
  6. Step 6: Final answer
    x = 28,796.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.